Document envelop or folder.



No. 645,029. Patented Mar. 6, I900.

W. D. BRADSTREET.

DOCUMENT ENVELOP 0B FOLDER.

(Appiication filed Feb. 27, 1899.) (No Model.)

@dfigm TH: wwms PETERS co. PNOTO-LITHON WASHINGTUN u c NlTED STATES PATENT OFFICE.

\VILLIAM D. BRADSTREET, OF B OSTON, MASSACHUSETTS.

DOCUMENT ENVELOP OR FOLDER.

SPECIFICATION forming part of Letters Patent No. 645,029, dated March 6, 1900. Application filed February 27,1899- Serial No. 707,067; (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM D. BRAD- STREET, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Document Envelops or Folders, of which the following is a specification.

My invention has for its object to provide an envelop or folder for securely holding papers and documents in such manner as to af-.

ford convenient access thereto without removing them from the envelop.

To this end my invention consists inan envelop constructed as hereinafter described and claimed. I

In the accompanying drawings, Figure 1 is a plan of an envelop-blank illustrating my invention. Fig. 2 is a plan of an envelop formed from the blank shown in Fig. 2, the pocket being in position to receive the ends of the papers. Fig. 3 is a transverse section on the line 7 7 of Fig. 2.

Referring to the drawings, Arepresents my improved envelop or folder, preferably composed of strong material, such as thick paper or paper having a cloth lining to adapt it for filing away papers or documents.

I) 6 represent the side flaps, and a one of the end flaps, said flaps being left loose or unsecured, so that they may be turned back to expose the contents of the envelop, as shown in Fig. 2.

At the end of the envelop opposite to the flap 0 is a pocket B for receiving and holding the ends of documents or other papers placed in the envelop, which are afterward covered by folding over thereupon the side and end flaps b c. The lower end flap of the envelop,

which is folded over, as shown in Figs. 2 and 3, to form the pocket B, is provided at its sides with laterally-extending tongues or projections g g, which are foldedover upon the inner side of the flap, of which they form a part, the ends of these tongues being. left loose and one overlapping the other, as shown in Fig. 3 and dotted in Fig. 2, said tongues thus forming the inner portion of the pocket and yielding or spreading readily to permit the pocket to adjust itself to the number of papers placed therein.

It will be seen by referring to Fig. 1 that the two tongues g g are spaced a considerable distance from the adjacent ends of the side flaps b b, so that when the blank is folded, as in Fig. 2, the tongues will lie above the lower edge'of the envelop and that portion or neck to of the body 15 which carries the tongues will form a well-defined bottom for the pocket. Thus quite a thick parcel of papers may rest in the pocket, which would not be the case where the tongues lie close to the side flaps and are glued or fastened to the body. My

pocket is expansible, therefore, in its bottom by reason of the neck w, which carries the tongues g g, and the tongues themselves by beingloose or disconnected at their outer ends from the body also expand with the increase in volume of the papers placed therebetween.

What I claim as my invention, and desire to secure by Letters Patent, is-- As an improved article of manufacture, a envelop or folder provided with side and top flaps to cover its contents, and formed on its remaining edge with a neck w having side tongues g, g spaced from the side flaps and disconnected at their free ends from the body, the said neck 10 forming a Well-defined bottom and the tongues g, g, the sides of a pocket B covered by said flaps, substantially as set forth.

Witness my hand this 24th day of February, A. D. 1899.

WVILLIAM D. BRADSTREET.

In presence of- F. F. RAYMOND, 2d, K. T. BUTLER. 

